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Fe3O4/PPy composite nanospheres as anode for lithium-ion batteries with superior cycling performance.
- Source :
-
Electrochimica Acta . Mar2014, Vol. 121, p428-433. 6p. - Publication Year :
- 2014
-
Abstract
- Abstract: Uniform Fe3O4/PPy composite nanospheres (FPCNs) with Fe3O4 nanoparticles embedded in PPy nanospheres (∼200nm) were prepared by a hydrothermal process followed by an ultrasonication assisted polymerization. For the first time, FPCNs were used as anode for lithium ion batteries, demonstrating enhanced electrochemical performance with high reversible capacity (544mAhg−1 after 300 cycles), remarkable capacity retention (98% of the initial capacity after 300 cycles), as well as good rate capability (332 mAh g−1 at 2000mAg−1). The spherical PPy matrix in FPCNs possesses three functions: 1) buffering the structural variation of Fe3O4 nanoparticles during charging/discharging process; 2) preventing the aggregation of Fe3O4 nanoparticles; 3) avoiding the direct contact between Fe3O4 nanoparticles and the electrolyte. The results observed in this study may shed some light on the investigation of MOx/polymer composite electrode materials. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 121
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 94696295
- Full Text :
- https://doi.org/10.1016/j.electacta.2013.12.105